EP 3008919 A2 20160420 - SPEAKER DEVICE
Title (en)
SPEAKER DEVICE
Title (de)
LAUTSPRECHERVORRICHTUNG
Title (fr)
DISPOSITIF HAUT-PARLEUR
Publication
Application
Priority
- GB 201310627 A 20130614
- EP 2014062517 W 20140616
Abstract (en)
[origin: GB2515098A] In a first embodiment the loudspeaker has a first diaphragm 3 and a second diaphragm 5. A first electromagnet having a first coil is mounted to the first diaphragm 3 and a second electromagnet having a second coil is mounted to the second diaphragm (5). A driver is provided for supplying an electrical drive signals to the first and second coils so as to generate first and second interacting magnetic fields which drive the first and second diaphragms (3, 5). In a second embodiment the second electromagnet is attached to fixed back plate (135, fig 7). Variants of the second and third embodiments use a permanent magnet in place of the second electromagnet. The present invention also relates to a speaker assembly (45) made up of an array of the speaker devices (figs 6A, 6B). The speaker device can be used in a motor vehicle.
IPC 8 full level
H04R 9/06 (2006.01); H04R 7/26 (2006.01); H04R 9/04 (2006.01)
CPC (source: EP GB US)
H04R 1/02 (2013.01 - GB); H04R 1/2803 (2013.01 - GB); H04R 1/2896 (2013.01 - US); H04R 1/323 (2013.01 - US); H04R 7/26 (2013.01 - EP US); H04R 9/02 (2013.01 - GB); H04R 9/025 (2013.01 - GB US); H04R 9/04 (2013.01 - EP US); H04R 9/06 (2013.01 - GB); H04R 9/063 (2013.01 - EP US); H04R 11/02 (2013.01 - GB); H04R 2499/13 (2013.01 - US)
Citation (search report)
See references of WO 2014198958A2
Citation (examination)
US 2010080406 A1 20100401 - YANG DONG IL [KR]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
GB 201310627 D0 20130731; GB 2515098 A 20141217; GB 2515098 B 20160203; EP 3008919 A2 20160420; GB 201410665 D0 20140730; GB 2516367 A 20150121; GB 2516367 B 20151104; US 10009692 B2 20180626; US 2016205479 A1 20160714; WO 2014198958 A2 20141218; WO 2014198958 A3 20150205
DOCDB simple family (application)
GB 201310627 A 20130614; EP 14734027 A 20140616; EP 2014062517 W 20140616; GB 201410665 A 20140616; US 201414898319 A 20140616